Improvement in car-ventilators



UNITED STATES PATENT OFFICE.

oHARLES o. GERHARDT, 0E WYANDOTTE, KANSAS.

IMPROVEMENT IN CAR-VENTILAT-ORS.

Specification forming part of Letters Patent No. 136,502, dated March 4, 1873.

To all whom it may concern:

Be it known that I, CHARLES C. GERHARDT, of the city of Wyandotte, in the county of Vyandotte and State of Kansas, have invented an Improved Ventilator for Railroad Cars, of which the following is a description and specification:

My invention relates to the combination of air chambers and conductors in such a manner that fresh air can be introduced into the car and foul air discharged therefrom at all times, and also affording a complete safeguard from re from the pipes upon the roof ofthe car.

Description of the Accompanying Drawing.

Figure lis an outside view o f the ventilator as it appears in use. Fig. 2 is an inside view of the ventilator, showing the different parts or sections, and embodying my invention. Fig. 3 is a back view of the air-receiver. Fig. 4 is a section at the base of the air-receiver, indicated by the line X Y in Fig. 2. Fig. 5 is a section, showin g the entrance to the cold-air pipe and cold-air chamber through the corrugated pipe G, indicated by the line Z O in Fig. 2.

General Description.

A is the hot-air pipe, within which the stovepipe may be placed,vr and through which the smoke and gases from the stove, as well as the foul air, will be discharged. B is the airchaniber over and surrounding the cold-air pipe C, extending from the ceiling of the car up through the roof to a point immediately below the receiver, into which the air passes through the corrugated pipe C, as shown by Fig. 5, and, being constantly filled with cold air, keeps the cold-air pipe cool, and thus, overcoming the heat from the hot-air pipe, allows a free and uninterrupted passage of fresh air into the car below, and removing all danger from iire by reason of the pipes becoming heated and igniting the roof of the car. O is the cold-air pipe, through which the fresh air passes into the interior of the car. D D are the air-receivers, presented fore and aft above the roof of the car, so as to catch and collect the wind, as the car is in motion either way, and pass it into the interior of the car and into the air-chamber B through the corrugated pipe C. The fronts are made of perforated iron and with wire-gauze upon the inside, so as to exclude all dust, flying bodies, and rain from entering the ventilator or car, and with perforated iron bottom, to allow all dust and matter which may collect to escape upon the roof of the car. E is the perforated iron front of air-receiver. F is the Wire-gauze upon the inside of air-receiver, protecting the air-chamber and pipes from all dust and water, while admitting pure air. G is the perforated iron bottom of air-receiver. ,H is the cap or top of ventilator, constructed of conical-shaped cyl-- inders and covered, thus insuring a more perfect draft, and protecting the structure from rams.

The ventilator is erected upon the roof of a railroad car, with the air-receivers D D presentedrvfore and aft to collect the wind as the car is in motion either way, and pass it into the air-chamber and into the interior of the car through the corrugated pipe G, as above described.

In cold weather, when the stove is used, the cold-air pipe C is extended down to the stove, perforated near the bottom for the escape of the fresh air into the car, and protecting the car from the heat and scorching of the heated stove-pipe.

The opening for the air-receiver is made by cutting through the body ofthe ventilator and returning each half, so as to form a guard to conduct the fresh air into the pipe and airchamber below, as shown by B', Fig. 4, and the accompanying drawing.

Galvanized sheet-iron is preferred as material from which to construct the ventilator.

What I claim as niy invention is- The ventilator as herein described, consisting of the combination of the air-receivers D D, the hot-air pipe A, Within which is placed the stove-pipe when required, the corrugated or cold-air pipe C, and the air-chamber B, all

constructed and arranged to operate substantially as herein set forth.

CHAS. C. GEBHABDT.

Witnesses:

JAMES A. CRUISE, D. W. WERTz. 

